| Starter | Tm | Tier | Game |
|---|---|---|---|
| David Cone | NYN | 7.96 | 198809250_NYN_SLN |
| Frank Viola | MIN | 6.02 | 198809250_MIN_ANA |
| John Tudor | LAN | 5.55 | 198809240_LAN_SFN |
| Ted Higuera | MIL | 5.22 | 198809250_OAK_MIL |
| Danny Jackson | CIN | 4.82 | 198809240_CIN_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rich Dotson | NYA | -4.27 | 198809240_BOS_NYA |
| Mike Campbell | SEA | -3.73 | 198809250_SEA_TEX |
| Rich Yett | CLE | -1.43 | 198809250_TOR_CLE |
| Mark Williamson | BAL | -1.43 | 198809251_DET_BAL |
| Jim Clancy | TOR | -1.21 | 198809250_TOR_CLE |
Based on accumulated WAA for this season up to 1988-09-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 8.07 | Orel Hershiser | 257 | LAN |
| +007+ | 7.74 | David Cone | 222.7 | NYN |
| +009+ | 6.84 | Frank Viola | 243 | MIN |
| +010+ | 6.82 | Teddy Higuera | 220.7 | MIL |
| +011+ | 6.73 | Mark Gubicza | 262.3 | KCA |
| +012+ | 6.68 | Danny Jackson | 256.3 | CIN |
| +013+ | 6.54 | John Tudor | 196.3 | TOT |
| +021+ | 5.61 | Allan Anderson | 193.7 | MIN |
| +025+ | 5.43 | Joe Magrane | 156.7 | SLN |
| +026+ | 5.42 | Roger Clemens | 256 | BOS |
| +029+ | 5.15 | Dennis Martinez | 236.3 | WAS |
| +030+ | 5.01 | Bob Walk | 213.3 | PIT |
| +032+ | 4.89 | Pascual Perez | 181.3 | WAS |
| +033+ | 4.88 | Jose Rijo | 162 | CIN |
| +034+ | 4.85 | Tim Leary | 219.7 | LAN |
| +039+ | 4.47 | Don Robinson | 161.3 | SFN |
| +042+ | 4.09 | Dwight Gooden | 243.7 | NYN |
| +046+ | 3.92 | Mike Scott | 211.3 | HOU |
| +052+ | 3.67 | Bobby Ojeda | 190.3 | NYN |
| +062+ | 3.23 | Rick Reuschel | 237 | SFN |
| +067+ | 3.13 | Ron Darling | 227.7 | NYN |
| +069+ | 3.06 | Charlie Leibrandt | 235 | KCA |
| +072+ | 2.95 | John Smiley | 194.3 | PIT |
| +073+ | 2.91 | Bryn Smith | 192.7 | WAS |
| +075+ | 2.89 | Doug Drabek | 210.7 | PIT |
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